Lubricating-pump.



G. LANG.

LUBRIGATING PUMP.

APPLICATION FILED Nov. 9,1906.

905,717'. I Patented Dec. 1,1908.

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LUBRIGATING PUMP.

APPLICATION FILED Nov. 9,1906.

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Patented Deo. 1, 1908.

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c. LANG. LUBRIUATING PUMP.

APPLICATION FILED NOV. 9,1906.

995,7 l '7. Patented Deo. 1, 1908.

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CARL LANG, OF CANNSTATT, GERMANY.

LUBRICATING-PUMP.

Application filed November 9, 1906.

Specification of Letters Patent.

Patented Dec. 1, 1908.

Serial No. 342,706.

To all whom it may concern:

Be it known that I, CARL LANG, a subject of the King of Wrtemberg, residing at Cannstatt, in the Kingdom of Vrtemberg, have invented certain new and useful Improvenients in Lubricating-Pumps; and I do ereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to pumps and particularly a pump for supplying lubricating fluid to one or several points of utilization.

The invention has for its object the provision of means whereby the supply of lubricant to each place may be independently or collectively regulated and accurately gaged.

Preferred and modified embodiments of the invention as hereinafter fully described and as particularly set out in the claims are illustrated in the accompanying drawings, in which Figure 1 is an elevation of a battery of pumps; Fig. 2 is a partial longitudinal vertical section; Fig. 3 is a transverse vertical section; Fig. 4 is a horizontal section; Fig. 5 is a horizontal section through one of the pump barrels above its piston; Fig. 6 is a detail vertical section through one of the pumps; Fig. 7 is a vertical section through a modilied form of the pump; Fig. 8 is a vertical transverse section through a modified form of pump; Fig. 9 is a partial view of Fig. 8 with the piston in a different position; Fig. 10 is a horizontal section showing certain pumps in elevation and others in section; and Fig. 11 is a cross section of a still further modification.

In the form of construction shown in Figs. 1 to 6 inclusive an oil reservoir 1 is equipped with rising pipes 2 corresponding in number to the pumps to be employed. These pipes 2 lead by way of chambers 7 to collecting vessels 4 through vertical passages, each controlled by individual needle valves 5 and collectively by a valve 6 whereby the supply of oil to the collecting vessels 4 may be independently or jointly regulated or shut off entirely. These reception vessels 4 may advantageously be provided with windows in their front to enable visual inspection of their contents. From the lower portion of these collection receptacles the oil is conducted to the interior of a pump barrel 8 through a small uncontrolled inlet opening.

/Vithin the upper portion of each pump bai rel revolves an arm of a crank shaft 9, th arms 10 of the respective pumps being i: some cases advantageously arranged at ai angle of to each other as shown in Fig 2. Vithin each pump barrel 8 a hollow pis ton 12 is pressed forward by the spring 1 and the piston head is provided with a sma bore 13 at one side of its axis, the front fac of the piston head being beveled upon th other side of the piston aXis. A valve plat 14 provided preferably with a pad 15 rest loosely within the pump barrel upon the fac of the piston head and between said pisto head and the crank arm 10. A stationar hollow guide-rod 16 is fitted snugly withi the hollow piston 12 and is in turn provide in its head 17 with a small passage 3 cor trolled by a rearwardly opening ball-valve 2 influenced by the spring 19. The interior this guide-rod 16 is in communication wit the outlet pipe 21 which conducts the lubr. cant to the point of consumption. The pif ton 12 is slotted at 22 and prevented fror rotating with relation to the guide-rod 16 b a screw 23 within said slot.

The operation of the individual puml which is the same for the others in the bai tery, is as follows: The oil is fed by gravit assisted by suction from the collecting vess 4 into the pump barrel at its upper portio above the plate valve 14. Assuming th space about the crank arm to be lilled wit oil, and also the space within the hollow pi: ton above the guide-rod, as the crank arm 1 revolves to the right and downward from i1 position as shown in Fig. 3 it holds the plai valve 14 firmly in place upon the bore 13 an presses the plate and piston downwar against the tension of the spring 11. Tf oil confined in the space between the ofuid rod and the piston head is thereby force past the ball-valve 20 against the action the spring 19 into the discharge pipe 21. A soon as the crank arm 10 reaches its lowe most position and begins to ascend, at tl same time wiping across the plate-valve t the left, the spring 11 advances the pisto and presses the plate-valve between the hea of the piston and the crank arm, tilting tl plate on to its beveled face and uncoverir the bore 13 as shown in Fig. 6. Thus the o flows by gravity and suction through tl bore 13, filling the space within the hollo piston vacated by the oil previously di charged therefrom. As the crank ari ches its uppermost position, as shown in 3, and starts to descend in its second elution, the plate-valve is again brought lts horizontal position controlling the bore and the operation of discharging the oil pped within the hollow piston is repeated, l thus in cycle.

n the modification shown in Fig. 7 the np is reversed so that the crank shaft by arm acts upon the plate-valve and piston m below, the oil being discharged from ive.

lhe operation of that form of device wn in Fig. 11 is substantially the same as Jt described with reference to Figs. l to nclusive, it differing from the construcn shown in Fig. 7 by the making of the )ply pipe 1 separate from instead of in- `ral with the pump, the rising pipes 2 being pensed with.

In Figs. 8 to 10 the pump-barrels 24 are anged in a horizontal position within the chamber and contain pump cylinders inserted from the left and held in place by 'ples 27. A plug 28 divides each cylinder o two chambers, this plug also serving as a Lring and guide for the piston rod 29 of the ible piston 30, 31, the piston 30 being also ded by a screw projecting from the cylin- 26 into a groove 32 formed in said piston. l l

shaft wiping across the plate to force the e piston 30 is provided with a longitudinal e 33 controlled by the plate-valve 34 ernately opening and closing said bore by son of the beveled face of the piston and awiping across said valve of a crank arm 'ried by the crank shaft 35. This piston ikewise pressed forward as in the previous e by a spiral spring 36 abutting to the yr upon the nipple 27. The nipple 27 acnmodates also a screw 37 provided with a gitudinal bore 38 and radial bores leading m the bore 38 to an annular space cominicating with the channel 43. The inner :l of this screw 37 is preferably beveled and controlled by a rearwardly opening flap .ve 39 hinged thereto. ln the present e, as distinguished from the construction wn in Figs. 1 to 7 inclusive, the oil is led m the space between the guiding plug and forward piston indirectly by a transverse ssage to a rising pipe 46, this passage being itrolled as in the former case by a rearrdly opening ball-valve 41 under the inence of the spring 40. From this rising e 46 the oil goes to the channel 43, being itrolled in its passage by a needle valve 42. )m the channel 43 the oil flows through s annular chamber and the radial passages the bore 38, past the flap check-valve 39 l the ball check-valve 44 to the discharge e 45. The relative position of the valves l other parts is controlled by the position the crank arm on the shaft as in the lviously described analogous construction l as illustrated in Figs. 8, 9 and 10.

Obviously the supply reservoir 1 may be formed integral with the collecting vessels and pump barrels or independently therefrom, and the sight openings for the inspection of interior conditions may be placed at any point of the oil passage. The supply reservoir may be replenished at the opening 47 provided with a strainer 48 or in any other ordinary manner and may be advantageously equipped as illustrated with a discharge tap for flushing the same.

Having thus fully described my invention, what l claim is 1. In a pump, the combination cfa pump barrel provided with a fluid inlet, a piston reciprocating therein and provided with a longitudinal bore, a plate-valve resting on the face of the piston head over its bore, means to tilt the plate to uncover the bore as the piston advances and to forcibly hold the plate in its normal position covering the bore as the piston recedes, a fluid discharge port at the rear of the piston head, and a checkvalve in said discharge.

2. In a pump, the combination of a pump barrel provided with a fluid inlet, a piston reciprocating therein and provided with a longitudinal bore, a piston head beveled at one side of its bore, a plate-valve resting against the front of the piston head, a crank- 1ston and plate backward and hold the plate seated on the bore to close the same during suoli backward movement, a spring pressing the piston and plate forward as the crankshaft retreats and tilting the plate on to the beveled portion of its seat to uncover the bore during such forward movement, a fluid discharge port at the rear of the piston head, and a check-valve in said discharge.

3. ln a pump, the combination of a pump barrel provided with a fluid inlet, a hollow piston reciprocating therein and provided in its head with a longitudinal bore to one side of its axis, the head of said piston beveled on the side of its aXis opposite the bore, a platevalve resting against the aiston head, a crank shaft wiping across the plate to force the piston and plate backward and holding the plate seated on the bore to close the same during such backward movement, a spring pressing the piston and plate forward as the crank shaft retreats and tilting the plate on to the beveled portion of its seat to uncover the bore during such forward movement, a guide-rod within the hollow piston and provided with a longitudinal passage, a rearwardly opening check-valve controlling said passage, and a fiuid discharge pipe leading therefrom.

4. ln a pump, the combination of a sup ly reservoir, a collecting vessel fed theregy, means to control the passage ofthe fluid from the reservoir to the collecting vessel, a pump barrel provided with a fluid inlet from the may collecting vessel, a hollow piston rod reciprocating within the barrel and provided in its head with a longitudinal bore, a mechanically operated check-valve controlling said bore to open the same as the piston advances and to close the same as the piston recedes, a guide-rod within the hollow piston and provided with a longitudinal passage, a rearwardly opening check-valve controlling said passage, and a fluid discharge pipe leading therefrom.

5. In a pump, the combination of a supply reservoir, a plurality of collecting vessels fed thereby, means to control the passage of the fluid from the reservoir to each collecting vessel independently, means to control the passage of the fluid from the supply reservoir to all of the collecting vessels collectively, a plurality of pump barrels each provided with a fluid inlet from a collecting vessel, each pump barrel having a piston reciprocating therein and provided with a longitudinal bore, a valve controlling said bore to o en the same as the piston advances and to c ose the same as the piston recedes, a fluid discharge port at the rear of the piston head, a check-valve in said discharge, and means for driving the several pistons.

6. In a pump, the combination of a supply reservoir, a plurality of collecting vessels fed thereby, means to control the passage of the fluid from the reservoir to each collecting vessel independently, means to control th passage of the fluid from the supply reservoi to all of the collecting vessels collectively, plurality of pump barrels each provided witl a fluid inlet from a collecting vessel, eacl pump barrel having a hollow piston recipro cating therein and provided in its head witl a longitudinal bore to one side of its aXis, th head of said piston beveled on the side of it axis opposite the bore, a plate-valve restin,` against the iston head, a crank shaft wipin, across the p ate to force the piston and plat backward and holding the plate seated oi the bore to close the same during such back ward movement, a spring pressing the pistol and plate forward as the crank shaft retreat and tilting the plate on to the beveled por tion of its seat to uncover the bore durin,` such forward movement, a guide-rod withii the hollow piston and provided with a longi tudinal passage, a rearwardly opening check valve controlling said passage, and a flui discharge pipe leading therefrom.

In testimony whereof I hereunto affix mj signature in the presence of two witnesses.

CARL LANG.

Witnesses ERNST ENTENMANN, KARL BosoH. 

